Methods Of Heat Transfer

Question 0

What is the ability to do work or cause change?

Answer 0

Energy

Question 1

Give 3 examples of how industry uses heat.

Answer 1

Weld and cut metals
Manufacture paper, glass, and textiles
Shape plastics

Question 2

What is heat?

Answer 2

A form of energy

Question 3

What is a measure of the amount of energy transferred?

Answer 3

Work

Question 4

What is the force a falling object can exert when it falls?

Answer 4

Positional potential energy

Question 5

What is the energy stored in food, batteries, or fuels?

Answer 5

Chemical energy

Question 6

What is the energy an object has due to its motion?

Answer 6

Kinetic energy

Question 7

The movement of what is a type of kinetic energy?

Answer 7

Particles

Question 8

What is kinetic energy of particles and potential energy?

Answer 8

Internal energy

Question 9

How is energy measured?

Answer 9

Joules

Question 10

Heat is the —— energy transferred from one object to another as a result of the difference in —— between the two objects.

Answer 10

Internal, temperature

Question 11

What is the average measure of kinetic energy possessed by moving particles.

Answer 11

Temperature

Question 12

More particle movement = ——- temperature

Answer 12

High

Question 13

Less particle movement = —— temperature

Answer 13

Low

Question 14

What happens when a hot substance comes in contact with a cold substance? Why?

Answer 14

They reach the same temperature because the heat from the hot object is transferred to the cold object.

Question 15

Heat flows from —– to —– temperatures, resulting in room temperature.

Answer 15

Hot, cold

Question 16

How does water behave at 0 degrees C? At 100 degrees C?

Answer 16

0 - water freezes

100 - water boils

Question 17

What is the transfer of energy through contact?

Answer 17

Conduction

Question 18

Explain how kinetic energy is transferred from particle to particle through conduction.

Answer 18

When a solid heats and gains kinetic energy, the particles move more vigorously (faster) and passes its energy to the neighboring particles.

Question 19

What materials are good conductors?

Answer 19

Metals, silver, copper

Question 20

What materials are poor conductors?

Answer 20

Plastic, glass, wood, fabrics

Question 21

—– are poor conductors and are used in everyday materials.

Answer 21

Insulators

Question 22

What is the method by which heat travels through fluids?

Answer 22

Convection

Question 23

During convection, —– decreases and —– rises.

—– fluid rises and —– fluid sinks.

Answer 23

Density, matter

Hot, cold

Question 24

How are off shore breezes and convection related?

Answer 24

The cold air from the land goes to the warmer water. The water warms the air causing it to rise. The cooler air moves in to replace it.

Question 25

What is heat transfer through electromagnetic radiation?

Answer 25

Radiation

Question 26

True or False - Infrared rays can travel through the vacuum of space?

Answer 26

True

Question 27

What color is best to absorb radiation?

Answer 27

Black

Question 28

Which color is best to reflect radiation?

Answer 28

White

Question 29

Which material is used best for insulation of radiation?

Answer 29

Glass/shiny metal

Question 30

What is the capability of an object to absorb energy in the form of heat for a given increase in temperature?

Answer 30

Specific heat

Question 31

Specific heat involves the number of —– of energy per —– of a substance to increase an object one degree —–.

Answer 31

Joules, gram, Celsius

Question 32

What is the total amount of heat stored; it is sensitive to size?

Answer 32

Thermal capacity